Phonograph.



J. E. HOUGH.

PHONOGRAPH.

APPLICATION FILED SEPT. 9, 1907.

- Patented Dec. 1, 1908 2 SHEETS-SHEET l J B. HOUGH;

PHONOGBAPH.

APPLIOATION FILED 8EPT.9,1907.

905,184. Patented Dec. 1, 1908.

2 sums-enm- 2.

III/1111i QWWWQM.

Like Talkingl\lachines,

srn'r's UNIT rnonoeaarn.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed September 9, 1907. Serial No. 391,966.

To all whom it may concern:

'HOUGH, a subject of His Majesty the King of Great Britain, and a resident of London, England, have invented a certain new and useful Improvement in Phonographs and of which the following is a specification.

-In phonographs as now commonly constructed it is customary to mount the disk carrying the reproducing stylus in an arm or frame, one end of which embraces a guiding rod, while the arm also carries a half nut adapted to engage with the screwed traverser rod, the half nut and the .disk being raised out of or lowered into engagement by apivoted cam adaptedto rest-on a fixed bar of the machine. Various slight modifications of this well known construction have also been suggested.

According to the present invention, it is proposed that the guiding'rod should be eccentrically and movably mounted in the frame or in an eccentrically movable bushing so as to act as a species of crank which can be partially rotated so as to bring the frame or arm carrying the disk nearer to or farther from the mandrel on which the record is to be placed, or as an equivalent, the eccentric bushing may be interposed between the rod and the arm, in either case the motion preferably at the same time bringing the half nut or other engaging or feeding device into or removing it from contact with the screwed traverser bar.

here the frame or arm is supported upon a guiding rod and arranged in front of the 1nandrel,.a convenient arrangement is to have a rearward extension formed rigidly with and projecting substantially diametrically opposite to such arm and embracing a fixed rod situated in a plane outside of and below that of the guiding rod and adapted to take some of the weight. of an overhanging horn, where that is employed.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated,

Figure 1. is a front elevation, partly in section,- illustrating a method of carrying out the invention. Fig. 2 is an end view on the line z-2, showin some of the parts omitted, of Fig. 1. Fig. 3 is an end view, showing the different positions the frame can be made to take. Fig. 4a front view of same. Figs. 5 and 6 show the eccentric bushing applied to the ends of the guiding rod, and Figs. 7 and 8 show the bushing between such rod and the carrying arm.

In the drawings, 1 is the usual mandrel, 2 the frame or arm carrying the reproducing or cutting disk'and having a backward extension 3 rigidly fixed thereto and projecting substantially diametrically opposite to said arm, and having its free end 3 bifurcated and adapted to embrace a fixed rod 4:, in such. manner as to traverse upon said rod and also being capable of a slight transverse and rotary or oscillating movement thereupon to permit the movement of the reproducer arm. The frame 2 also has fixed thereto a spring arm 6 upon which is mounted the wheel 7 which engages with traverser bar-8, arranged below and in substantially the same plane with the guiding-rod 5.

As shown in Figs. 1 to 4, the frame or arm 2 and its extension 3 are mounted upon the guiding-rod 5 eccentrically mounted in theframe of the machine, the trunnions 9 not coincidingwith the center of rod 5, and the longest radius of the eccentric rod being arranged in substantially longitudinal alinement with the reproducer arm and its attached extension, the construction and arrangement being such that when said rod is turned, as by crank 10, the frame or arm 2 is caused to rise or fall, or caused to es cillate, the engagement of the bifurcated end of the BXtGDSlOIIB with the rod 4 serving as the pivot point or center of such oscillating movement (as shown in dotted lines, Fig. 3), thus bringing. the disk carried by the reproducer arm nearer to or farther from the mandrel 1, and at the same time bringing the engaging or feeding device-7 into or removing it from contact with the traverser bar 8. Thus it will be seen that the fixed rod tandthe bifurcated end of.

extension 3, forming the pivot during such movement, will serve to take some of the weight of the reproducer arm and the horn attached thereto. 1

In Figs. 5 and 6 the cam motion is imparted to the uiding rod 5 by mounting it in eccentric bushings 11, which can be turned in the frame, while in Figs. 7 and 8,

such bushings are shown on the guiding rod between it and the arm 2.

It is obvious that the positions in the frame of the fixed rod, guiding rod and traverser bar may be varied depending upon whether it is desired to have some or all reproducer arm,

ads

or them in front 01" or behind the mandrel and that the lower rod lniay be used to produce the cam motion and rod 5 be the iixed one, but the construction indicated will be found efficient.

What I. claim is l. In phonographs and like talking Inachines, a reproducer arm, aguiding rod therefor eecentricully and movably mounted,

an extension rigidly connected to said reproducer arm and extending; substz'intially diametrically opposite therefrom and prorided with a biturcated end, and a tixed rod adapted to be engaged by the bifurcated end of said extension lQfOl'l'll a pivot point for said reproducer arm, the longest radius of said eccentrically mounted being arranged in substantially longitudinal alineinent with the reproduccr arm and its attached extension, whereby by the movement of the eccentrically mountedguiding rod, the reproducer arm is caused to oscillate upon said pivot point, substantially as and for the purposes set forth.

2. In machines of the class described, a a guidingrod therefor, a fixed rod arranged in a. plane outside of said guidingrod, an extension rigidly fixed to and projecting substantially diametrically opposite to said reproducer armand provided With a bifurcated end adapted to engage said fixed rod and having an oscillatory and transverse movement thereom and an eccentric on ing its longestradius in substantially longiguiding rod said guiding; rod hav tudinal alinei'nent with the reproducer arm and its attachedcxtension and adapted to oscillate the reproducer arm and its atached extension, to thereby raise and lower the reprodueor arm, substantially as and for i the purpose described.

3. 111 machines of the class described, a rcproducer arm, a guiding rod therefor, 11 fixed rod arranged in a plane outside of said guiding rod,- an extension rigidly fixed to and projmtingrisubstantizilly diametrically opposite to said reprodueer arm and provided with a bifurcated end adapted to engage said fixed red and having, an oscillatory and transverse movement thereon, traverse]: bar, a feeding device carried by said reprodueer arm and engaging said traverser bar, and an eccentric on said guiding rod having its longest radius in substantially longitudinal alincn'ient- With the re producer arm and its attached extension and adapted to oscillate the reproducer arm and its a itached extension, to thereby raise and lower the rcproduecr arm with relation to the mandrel and to move the feeding device into and out of engagement with the trav erser bar, substanti: lly as and for the purpose described.

- In testimony whereof ll my hand in the presence Witnesses.

have hereunto set of two subscrib ng JlilifiES EDWARD UOUGH. {i"itnesses Frnmniucii Fox, Lsoxmn W' 

